s as Z.

2. s as z.

Taking notice; attentively viewing or noticing; as an observant spectator or traveler.

Obedient; adhering to in practice; with of. He is very observant of the rules of his order. We are told how observant Alexander was of his master Aristotle.

Carefully attentive; submissive.

A slavish attendant.

A diligent observer.